To create the illusion of perspective that we want in bonsai, you have to go through and make sure the internodes get smaller with each node, which doesn't seem to be the case with the hedge technique. That is why some trees feel like a bush, because the scale and perspective is lost. Now that your tree is defoliated, you will need to restart many branches wherever the internode length is reversed. These hard cut backs may feel like a set back, they will be a good thing because they will create even more backbudding and will make more taper and you will have a higher quality tree.